Rational inquiry sash



FIG. 1 is a front view of a rational inquiry sash showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a front view of a second embodiment of a rational inquiry sash showing my new design, the only difference being the length.

The broken line showing of the human form in FIGS. 1 and 5 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a rational inquiry sash, as shown and described. 